The evaluation of quinonoid compounds against Trypanosoma cruzi: Synthesis of imidazolic anthraquinones, nor-β-lapachone derivatives and β-lapachone-based 1,2,3-triazoles
作者:Eufrânio N. da Silva Júnior、Tiago T. Guimarães、Rubem F.S. Menna-Barreto、Maria do Carmo F.R. Pinto、Carlos A. de Simone、Claudia Pessoa、Bruno C. Cavalcanti、José R. Sabino、Carlos Kleber Z. Andrade、Marilia O.F. Goulart、Solange L. de Castro、Antônio V. Pinto
DOI:10.1016/j.bmc.2010.03.029
日期:2010.5
In continuing our screening program of naphthoquinone activity against Trypanosoma cruzi, the aetiological agent of Chagas' disease, new beta-lapachone-based 1,2,3-triazoles, 3-arylamino-nor-beta-lapachones, 3-alkoxy-nor-beta-lapachones and imidazole anthraquinones were synthesised and evaluated against bloodstream trypomastigote forms of the parasite. Compounds 2,2-dimethyl-3-(2,4-dibromophenylamino)-2,3-dihydro-naphtho[1,2-b]furan-4,5-dione, IC50/24 h 24.9 +/- 7.4 and 4-azido-3-bromo-2,2-dimethyl-3,4-dihydro-2H-benzo[h]chromene-5,6-dione with 23.4 +/- 3.8 mu M showed a trypanosomicidal activity higher than benznidazole. These results demonstrate the potential of naphthoquinone derivatives as novel structures for the development of alternative drugs for Chagas' disease. (c) 2010 Elsevier Ltd. All rights reserved.